Email deliverability
Inbox placement resources without the noise.
Use this hub to check the basics before sending: authentication, sender health, message risk, and the next practical action.
Start here
Check setup before scaling outreach.
The generator can help with the draft. Folderly helps with the deliverability system around it.
SPF
sender authorization
DKIM
message signing
DMARC
domain policy
Direct answer
Email deliverability is the ability of an email to reach the recipient's inbox instead of bouncing, being filtered, or landing in spam. For cold email, start with authentication, sender reputation, list quality, message risk, and conservative volume before judging copy performance.
Definition
Email deliverability combines technical authentication, sender reputation, content quality, recipient engagement, and mailbox-provider filtering behavior.
Best for
- - Teams diagnosing why cold emails land in spam or stop getting replies.
- - Marketers planning authentication, warmup, content review, and sender monitoring.
- - Users who need a hub that routes to tools, guides, and Folderly workflows.
Not best for
- - A single score that explains every inbox-placement outcome.
- - Scaling outreach before authentication, list quality, and sender reputation are stable.
- - Replacing ongoing monitoring after campaigns launch.
Example
Input: A new domain with SPF, DKIM, and DMARC configured, a verified list, and a clear cold email draft.
Output: Run a deliverability check, send a controlled sample, monitor bounces and complaints, then increase volume gradually.
Limitations
- - Deliverability guidance cannot control recipient engagement or mailbox-provider changes.
- - Detailed diagnostics require sender-domain data and campaign history inside a secure workspace.
Useful next sources
Authenticate the domain
Verify SPF, DKIM, and DMARC before you increase sending volume or launch a new mailbox.
Review this stepReview the message
Run the draft through Folderly AI before it moves into a sequence or CRM workflow.
Review this stepMonitor sender health
Watch reputation signals, bounce behavior, and placement changes as campaigns scale.
Review this stepResources
Fewer links, clearer next steps.
The old hub tried to be a complete library. This version points to the pages that help teams make a practical pre-send decision.
Email deliverability guide
A practical guide for authentication, reputation, warmup, and inbox placement basics.
Authentication analyzer
Check whether the sending domain has the records recipients expect to see.
AI deliverability checker
Check copy risk, AI-template smell, compliance, sender setup, and complaint budget.
Complaint rate calculator
Model how little room high-volume sends have for spam complaints.
How to avoid spam filters
Learn the common copy, setup, and list-quality issues that can trigger filtering.
Pre-send checklist
Common issues
What should I check first?
Start with SPF, DKIM, DMARC, sender profile, bounce handling, and a conservative sending plan. Then review message content.
Where does Folderly Email Generator fit?
Folderly Email Generator drafts cold emails from offer, audience, and goal context. Folderly remains the deeper deliverability and inbox placement platform.
Should I rely on a single deliverability score?
No. Use scores as signals, then review authentication, sender reputation, content, audience quality, and mailbox behavior together.